Ok, let's be a little more specific: Using dried ketchup in place of regular sounds gross.
There's nothing inherently wrong with ketchup that isn't moist but that moistness is a part of its appeal in its traditional uses. I wouldn't wrap my chips in jerky but I'd hapily douse them in gravy (apparently a local speciality) and I like my burgers juicy. For that reason, I find kimchi rather enjoyable on burgers, despite not really apreciating it in other settings. It really adds to the texture and juiciness, while "ketchup jerky" sounds like something that would provide the texture of cold, american-style, burger cheese (basically rubber) and take away from whatever juices the burder itself had.
I'm sure you could find a use for dried ketchup but, for me, that use would probably just be rehydrating it. Most, if not all, of what I have ketchup with prefers a sauce.
